So, remember, when we set up the divergence theorem, we need the normal vectors to point out of our region, which means that on the top surface, n But, on the bottom face, we want n pointing down.

当我们建立散度定理时，我们要使法向量指向区域外，即在上表面时，要指向上方。，we，want，n，pointing，up。,但是，在下表面，要使n指向下面。

youdao

Iran faces a U. N. Security Council deadline on Thursday to stop uranium enrichment, or face possible sanctions.

联合国安理会限定伊朗必须在星期四以前停止浓缩铀，否则就可能面临制裁。

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N raised the candle, and I discerned a soft-featured face, exceedingly resembling the young lady at the Heights, but more pensive and amiable in expression.

迪恩太太举起蜡烛，我看见了一张柔和的面孔，极像那个在呼啸山庄的年轻小姐，只是面相看上去更深沉，更亲切。

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The U.N.Tribunal in The Hague wants Radovan Karadzic to face 11 charges Monday, including involvement in Europe's worst massacre since World War II in Bosnia-Herzegovina,during the violent break-up of Yugoslavia.

VOA: standard.2009.10.25

Security Council, we agreed on the need for Iran to uphold its international obligations or face increased sanctions and pressure, including U.N. sanctions.

WHITEHOUSE: President Obama and President Calder��n Press Availability | The White House

Girl Up encourage American girls to get involved raising awareness of the issues girls face around the world, and the U.N. programs addressing them.

CNN: Turning global activism into a game

But, even setting aside the difficulties of learning how to run a retail business, such a site would face problems of protocol worthy of the U.N.

NEWYORKER: Publish or Perish